Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum ...

Bob is a service technician who is well trained and nationally certified. However, he sometimes suffers from the same confusion that all technicians occasionally do - the facts that he gathers may or ...

Selecting the appropriate condenser for an evaporator system is a key decision as the glass condenser is a foundational component when acquiring a new rotary evaporator system. The diversity of glass ...